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If you want a cable-free, all-day sport companion with a charging case and true wireless freedom, choose ABCDONG Open Ear Headphones; if you need a plug-and-play USB-C wired headset that never needs charging across phones, tablets and laptops, choose AHFYCIH Open Ear USB.
• ABCDONG Open Ear Headphones — biggest strength: True wireless Bluetooth 5.3 with a charging case, a 16.2mm dynamic driver and IPX6 water resistance, so sweat, rain and long outdoor sessions are less of a worry.
• ABCDONG Open Ear Headphones — biggest trade-off: It depends on battery and pairing. You charge the case, you keep it near your phone, and you live with Bluetooth range of about 33 feet.
• AHFYCIH Open Ear USB — biggest strength: A wired USB-C connection with an in-line remote, a DAC chip, a 1.2m oxygen-free copper cord and a cable fixer clip. No battery, no pairing, no dropouts.
• AHFYCIH Open Ear USB — biggest trade-off: It is tethered to a USB-C port. No USB-C port, no sound — and there is no wireless mode at all.
• Pick ABCDONG Open Ear Headphones if you want wireless freedom for running, cycling and commuting.
• Pick AHFYCIH Open Ear USB if you want zero charging, one cable and broad USB-C device support.
The ABCDONG set is built around one idea: stay aware while you listen. The open-ear, bud-free design lets ambient sound mix with your music or calls, which is exactly what you want when you are jogging near traffic, biking a shared path or walking through a busy station. There is no ear cup and no sealed tip pressing into your canal, and the wrap-around earhook holds the unit in place during movement. If ear fatigue has ever ended your listening session early, the lightweight silicone build is aimed squarely at you.
Under the hood it runs Bluetooth 5.3 with a connection range up to 33 feet, so you can leave your phone on a bench or desk and keep moving around it. The 16.2mm dynamic driver and 20Hz–20,000Hz frequency range suggest a tuning that leans toward fuller low end than you would expect from a small open design. There is a built-in mic for calls, plus voice assistant support so you can trigger Siri or Google Assistant hands-free. The nano coating gives it IPX6 water resistance, which covers sweat and splashes rather than swimming. The charging case supports one-step pairing: open it after the first setup and the earbuds reconnect on their own. Battery life is rated at 30 hours average with a 2-hour charge time, and the cable, manual and wireless charging case all come in the box.
AHFYCIH Open Ear USB: Who It's For
The AHFYCIH headset solves a different problem: it removes batteries and Bluetooth from the equation entirely. It terminates in a USB-C plug, so it works with USB-C smartphones, tablets and laptops in one go. The compatibility list is broad — recent iPhone models, Samsung Galaxy S and Z series, Galaxy Tab, Pixel, OnePlus and more — which makes it a genuinely useful single headset if your household or desk is a mix of devices. Plug it in and it plays. No pairing screen, no low-battery warning halfway through a call.
The fit is handled by 15° adjustable over-ear hooks, and the design is described as ultra-lightweight and pressure-free, sized to work from kids to adults. That adjustability is the detail that matters here: hooks that can be angled tend to sit better on different ear shapes than fixed ones. The 1.2m (about 3.9ft) oxygen-free copper cord comes with a cable fixer clip so you can pin the wire to a collar or shirt and stop it swinging while you walk. Audio runs through a dynamic driver paired with a DAC chip, quoted as 3D lossless stereo, with a mic for calls, meetings and streaming. The in-line remote handles play/pause, track skipping, volume and call management, and a one-touch press wakes Siri or your Android assistant. In the box you get the headphones, the cable clip, a zipper PU storage case and a warranty card. It is listed for ages 6 and up.
Who should buy it: students, desk workers, gamers and commuters who want a dependable wired set, and anyone juggling several USB-C devices. Who should skip it: iPhone users on older Lightning models, anyone with a 3.5mm-only device, and people who specifically want wireless freedom while training.
• Best for wireless freedom → ABCDONG Open Ear Headphones. Bluetooth 5.3 with no cable to snag on a treadmill or handlebar.
• Best for zero charging → AHFYCIH Open Ear USB. It draws power from your device, so there is nothing to top up.
• Best for sweat and weather → ABCDONG Open Ear Headphones. IPX6 water resistance is the spec that matters when you train outdoors.
• Best for mixed devices → AHFYCIH Open Ear USB. One USB-C plug covers phones, tablets and laptops instead of pairing each one.
• Best for open-ear awareness → both. Each leaves your ear canal open, so traffic and conversation still reach you.
• Best for low-end punch on paper → ABCDONG Open Ear Headphones. A 16.2mm driver versus the AHFYCIH's 32 ohm, 20–20,000Hz setup; the larger driver is the one aimed at bass.
• Best for calls at a desk → AHFYCIH Open Ear USB. The in-line remote puts volume and call control at your fingertips, with a DAC chip in the chain.
• Best for portability → ABCDONG Open Ear Headphones. A charging case and earhooks pack small; the AHFYCIH set travels with a cord and a clip.
• Best for kids and shared use → AHFYCIH Open Ear USB. Adjustable 15° hooks rated for ages 6 and up, and no pairing to set up.
I would buy the ABCDONG Open Ear Headphones. In my opinion, the combination of Bluetooth 5.3, a 30-hour average battery rating, IPX6 water resistance and wrap-around earhooks makes it the more versatile everyday pair — it works for a run, a commute and a long workday without a cable in the way. The 16.2mm driver and charging case round out a package that feels built for movement and all-day wear.
That said, I would not talk anyone out of the AHFYCIH Open Ear USB. If you hate charging, want one headset for a phone, tablet and laptop, or you simply want a cable that never drops the signal, the USB-C model is the smarter buy. Check the current price on Amazon for both before you decide.
FAQ
Both leave your ears open, which helps you hear traffic. The ABCDONG pair adds IPX6 water resistance and wrap-around earhooks, so it handles sweat and movement better than a wired set with a swinging cord.
Yes, on USB-C models. The compatibility list covers recent iPhone generations along with iPad Pro and Air. Older Lightning iPhones are not covered, since there is no USB-C port to plug into.
Yes. They are true wireless and charge in the included case, with a 2-hour charge time and a 30-hour average battery rating. The AHFYCIH set has no battery at all because it runs from your device's USB-C port.
Both have a microphone. The ABCDONG pair supports voice assistants and hands-free calling over Bluetooth; the AHFYCIH pair puts volume and call controls on an in-line remote and uses a DAC chip for audio, which suits desk and study use.
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